Hi everyone...
This is anurag aka lithiumhead from india..
(second year electronics engineering )
(VU2??? awating ham license)

This is my first message to 6502.org
and since i am still learning...(in other words i havent created a microprocessor based circuit using 6502 or for that matter any other mu p )

Anyway i had bought this atari video console system game 14 or so years ago in poland ... after i had managed to spoil it when i was young...it had been sitting all this long in the storage cavity of my bed...(i was sleeping on it all this long!!)

just some weeks ago i opened it up and salvaged all components from it... i believe it had a problem in the rf out or power supply unit and so i think the processor in it is alright

interestingly enough... i found these processors/chips in the the game ...(dont even ask how i managed to desolder them...i broke only one pin on each)

Anyway the pictures of ICs after desoldering them along with their inscriptions is here:

http://www.nkchugh.com/atari.jpg

the pic is 64Kb

if the above link doesnt work try...
http://www.geocities.com/hey_upasna/atari.jpg

(ps please dont get carried away browsing the sites where the pics are loaded.. NK Chugh is my fathers name and Upasna is my friends name..)

anyway after finding 3 chips...i looked up the
Synertek 1981-1982 Data Catalog (All Chips)
http://www.6502.org/datasheets/synertek_databook.pdf

located in the datasheet section of 6502.org

and to my amazement i found that 6591 is a floppy disk controller
futher still according to the manual it is supposed to have 40 pin where as the chip i found had 48 pin

please someone ...
help me identify the chips in the photo and tell me if there are any great circuits i can make out if it..

by the way... in mumbai there is a place called lamington road and every friday there is a flea market in the morning ..
it is called CHOR BAZAAR(chor means thief in hindi and bazaar means market)

can anyone please telll me which kind of electrnics items have 6502 series ICs in them... i know one for sure..Atari games

I am going to go through the hardware projects section after this posting this message

Anurag
The lithiumhead

"In the game of life and evolution, there are three players at the table: human beings, nature, and machine. I am firmly on the side of nature. But nature, I suspect, is on theside of machines."
--George Dyson,Darwin Among the Machines

Hello.

Are these parts from the Atari 2600? Atari made quite a few different machines (nearly all based on the 6502). The 2600's CPU is limited, it has a smaller address space (8KB?) and no interrupts.

The Nintendo NES/Famicom has a CPU based on the 6502. It has added features, the only removed feature was the decimal mode. There are many clone systems based on the design (still being produced today). If you see something labeled like "8-bit game system", or "classic game console" and it has a 60 or 72-pin cartridge connector, it's one of those.

They might use one of these parts for the CPU:
UM6527
UM6547
UM6561
UM6576
UM6578

If it's a large chip with many pins, then it has the NES's video chip integrated.

finally thanks memblers for replying... 93 views and i was getting depressed.. seemed that i would never come to understand that chip
anyway... i have a nes too.. but its burnt out i think...thanks to younger me that tried to run it using ac to ac 12v transformer...
maybe only the power supply is damaged but never the less...it has a an ic i was wondering which one it was...
anyway now i know
it is a chip directed mounted on the pcd and covered with black paste.. i dont know what u calll that .. if some one knows tell me what that black thing is (is there anyway to remove it with out damaging the chip to fotograph the chip?? like melting or something?)
anyway.. i am a bit low on knowledge... have to understand a bit more about electronics (still learning) till i get to understand things better...

btw the atari i was referring didnt have a slot... it had only the other chips which were there in the foto with a couple of others like power regulator and 7400 series...

and the games i used to play on it are the same as the ones i found on the net...(roms and emulators et al) ... for the atari vcs emulator

i found these on atariage.com under atari vcs section hence i though it was atari vcs

any way i have to do a bit morte research on it i think after the lead membler has given me

perhaps then in a few months i would be answering others queries!!!
till then its back to the books for me

chao!!

@nurag

I've seen those black epoxy-covered things, one of my friends call them 'gloptops'. Their often used as ROMs, but I think some NES-clone CPU's are made like that also (if it's not fairly small, that's probably what it is). I think the 'chip' in this case is built-in the board itself.. I'm not sure (I'm pretty new to electronics, also).

BTW, if you can find an original NES, the main cpu is the part '2A03'. There's a whole lot of info about it on my site: http://nesdev.parodius.com/